Improvement in saw-jointers



UNITED STATES HoEToN EAEEON, or EAU cLAinE, WISCONSIN.

IMPROVEMENT IN sAw-JolNTERs.

Specilication forming part of Letters Patent No. 146,'567, dated January 20, 1874; application tiled November 7, 1873.

To all whom Muay concern: 4

Be it known that I, HORTON BARRON, of the city and county of Eau Claire and State of Wisconsin, have invented a new and useful Improvement in Machines for`Jointi11g Straight- Edge Saws; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being vhad to the accompan ying drawings, in which- Figure 1 is a perspective view of my iinf` proved sawjointer as attached to a bench. The grooved bench is merely shown by way of 'illustrat-ion. A suitable saw-clamping bench will in practicebe used. Fig. 2 is a vertical cross-section of the saw-jointer. Fig. 3 is a longitudinal section of the le-holder and pori tion of the saw-clamping bench, a saw being edge ofthe saw-blade while the blade is held horizontal between clampingjaws of a vise or bench. My improvement consists, first, in a file-holder attached to a swinging slide, which has an upright standard carrying an overhangi ing pendent post, on which the holder for a flat iile is adjustably fitted, whereby the ile can be moved over the toothed edge of a sawblade in contact with the same in one direction, and swung up and over out of contact with the saw-blade in going back for a new operation upon the blade; second, in providing the file-holder bed with two narrow guides, and having one of these guides serve as the hinge upon which the file-holder swings as well as slides, and the other as a rest for the standard of the file-holder while it is being moved over and in contact with the toothed edge of the saw; third, in the bed-piece of the file-holder, constructed to serve as a support `for the hinging-guide of the file-holder, and to t upon the edge of the saw-clamping bench, and bear with its two ends, its back, and top upon the bench, and thus, whencon- 1ined by screws passed down through its top,A

not only afford a rm, steady support for the le-holder during its operation, but also relieve the holding-screws from strain, this construction being very simple, convenient,`and cheap; fourth, in the file-holder grooved and shouldered, and furnished with a tubular stem, and also with screws for confining the tile and adjusting its height, in combination with the pendent post, swinging standard, and the bedpiece, as will be hereinafter described.

A is the bed-piece, made of metal, say about five feet long andsix inches wide. At each end there is a flange, a, turned down at right angles. These iianges are tied together by a narrow strip, b, of metal. This strip forms a vertical rib between the front and rear edges ofthe bed-piece, and is of the same depth as the flanges. Through the iianges, under the bed-piece, and in rear of the strip, a circular metal rod, c, is passed, and confined in place by nuts d d, screwed on its` ends outside the ilanges. At the front edge of the bed-piece, on top, a narrow horizontal rib, e, is turned up, as shown. The rod c serves as a hinging axis for the file-holder, and also as a guide thereto. The rib e serves as a guide and rest for the standard of the file-holder. The rib and flanges strengthen the bed-piece, and also serve to assist the screws which confine it upon the edge of the clamping-bench in holding it in position. B is the standard of the file# holder, resting loosely on the rib e of the bedpiece. It has a horizontal bifurcated base, which terminates in two hinging-eyes, ff, and `hinges thereby to the rod c, as shown. It also has a horizontal bracketextension, g, at its upper end, which overhangs the clampinggroove of the saw-clamping bench or vise C. Through this bracket a vertical post, n, is passed, and confined by a nut, o, on its upper end, so as to be pendent from the bracket g.'

On this post the file-holder is confined by means of the set-screw D, and can be set up or down to accommodate narrow or broad saw-blades. The file-holder E has a groove, s, cut longitudinally through it on its under side. This groove is in the `form of a T, and, therefore, the file-holderis open at the bottom, and has two side shoulders or supports for the file to rest upon. `The openportionA exposes the file to the teeth` of the saw under it when the holder is adjusted to bring the le down upon the teeth or to cause the teeth ICA to pass into the lower narrow portion of the groove. hh are set-screws' for conning the le in the groove of the holder. m is a tubular sleeve or extension from the top of the holder, which ts around the pendent post, and is conined to the post at any point desired by the set-screw D, as shown. w is a groove in the back of the file-holder. It receives the standard, and thus the holder is guided by it, as shown.

To use the jointing machine or implement, it is adjusted to the edge of a suitable clamping-bench over a saw-blade clamped in the same, and the sliding post is swung over, so as to bring thevle from the position shown in dotted lines in Fig. 2 down upon the saw-teeth, and then, with the ileholder, is moved from one end of the saw to the other, and then swung back and slid to the starting-point, and again swung over'in contact with the teeth and moved forward. This is done as many times as necessary, and as the operation proceeds the holder is let down, so as to maintain the contact of the iile with the saw-blade.

Havin g described my invention, what I claimv as new,' and desire to secure byLetters Patent isl. In a saw-jointer, the combination of the bed-piece, aiording two guides, o e, the vertically-adjustable le-holder E, and the swinging and sliding standard, substantially as and for the purpose set forth.

2. Thele-holder E, constructed as described, in combination with the swinging slide, consisting of a standard, B, with hinging-eyes f j', and pendent post n, as described.`

3. The bed-piece of the file-holder E, constructed with the guides c e, flanges a a, and stay-strip b, as set forth.

4. The file-holder E, with the T-sha-ped groove s, tubular extension m, and screws D h, in combination with the pendent post u, standard B, hinging-eyes f j', and the bedpiece A o e, as set forth.

HORTON BARRON.

Vitnesses SAM. S. MILLER, GEORGE C. TEALL. 

